Musical tone controller



FIG. 1 is a front elevational view of musical tone controller showing our new design;

FIG. 2 is a right-side view thereof;

FIG. 3 is a left-side view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a front perspective view thereof.

The broken lines are shown for illustrative purposes only and form no part of the claimed design. The cable is fragmentarily shown to indicate indeterminate length. 

The ornamental design for a musical tone controller, as shown and described. 